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Page last updated at 10:26 GMT, Friday, 12 October 2012 11:26 UK

Microsoft shows off watch-like sensor and other tech news

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The Chinese telecoms firms Huawei and ZTE are a threat to American national security - according to a US government report. Meanwhile, Microsoft has shown off a prototype watch-like sensor which lets you control various devices using hand gestures.

Spencer Kelly reports on these and other stories.

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